The AILE (Association of Local Initiatives for Energy and the Environment) passed two Deutz Agrotron 110 and 120 Mk3 tractors through its bank on November 23, 2002, at CUMA (cooperatives for used agricultural equipment) in Pleyber Christ, of which Louis Laurent is president.
From that date, these two tractors have been treated non-stop with the XBEE Enzyme Fuel Technology. On May 22, 2003 _ exactly six months of treatment later _, these same tractors were studied on the same AILE bench.